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LM5119

Part Number	LM5119
Manufacturer	National Semiconductor
Description	Wide Input Range Dual Synchronous Buck Controller
Published	Oct 28, 2010
Detailed Description	LM5119 Wide Input Range Dual Synchronous Buck Controller September 28, 2010 LM5119 Wide Input Range Dual Synchronous B...
Datasheet	LM5119 PDF File

Overview

LM5119 Wide Input Range Dual Synchronous Buck Controller September 28, 2010 LM5119 Wide Input Range Dual Synchronous Buck Controller General Description The LM5119 is a dual synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply.
The control method is based upon current mode control utilizing an emulated current ramp.
Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation.
The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage ap...

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